Pedrollo JCR Stainless Steel Self-Priming Jet Pump

Pedrollo JCR pump explained

The Pedrollo JCR is a self-priming centrifugal pump built with a stainless steel AISI 304 pump housing, impeller and cover, rated up to 70 l/min (4.2 m³/h), up to 60 m of head and 9 m of suction lift. Models are JCR 1C, 1B, 1A, 2C and 2A. Seven Star LLC supplies the JCR in Oman and the GCC as an independent supplier in Muscat.

JCR 1 and JCR 2 correspond hydraulically to the JSW 1 and JSW 2, and the letters C, B and A step through the impeller sizes. The datasheet lists JCR 1C at 0.37 kW, 1B at 0.48 kW, 1A at 0.55 kW, 2C at 0.75 kW and 2A at 0.90 kW, with head from 34 m to 58 m at the first table point. The difference from the JSW is the stainless steel housing, which replaces cast iron, and the page lists certified pumps as available on request.

JCR technical specifications

The values above come from the manufacturer technical data for the series. Individual models inside the JCR range differ in power, head and current, so always confirm the exact model code before ordering.

How the JCR works and what limits it

Limits are 6 bar working pressure, liquid -10 to +40 °C, ambient up to +40 °C and IP X4. The ejector unit is Noryl, the shaft is AISI 431, and the self-priming action comes from the ejector, as in other pumps of this type. A check valve at the suction end is part of the installation.

A self-priming jet pump combines a centrifugal impeller with an ejector fitted in the pump body. Part of the delivery flow is recirculated through the ejector nozzle, which creates the depression that draws air and water up the suction line, so the pump can evacuate the suction pipe and prime itself after the body has been filled once. Because the pump tolerates air mixed into the suction flow, it suits wells, tanks and cisterns where the water level changes. The suction lift is limited to the manometric value on the data sheet, and the check valve at the end of the suction line keeps the pipe full between starts.

JCR models and performance data

The heads in this table are read from the first point of the manufacturer 50 Hz performance table and fall as flow increases, so use the full curve for the real duty point. Where a 60 Hz version is needed, ask us: the manufacturer states that 60 Hz motors are available on request for many models.

Where the JCR fits: related Pedrollo pumps

For the cast iron equivalent see the JSW 1-2, for higher flow see the JSW 3, and for a quiet multistage self-priming option see the PLURIJET 90-120. The F-INOX is a stainless steel option when higher flow is required.

Selecting a JCR pump: checklist

• Choose the JCR rather than the JSW when a stainless steel wetted body is wanted
• Choose the size 1 or 2 and the letter from the head table
• Verify suction lift (9 m) and the 6 bar limit
• Single-phase JCRm or three-phase JCR
• Ask about certified versions if a project requires them

Installing and maintaining the JCR

Install the pump close to the water source on a rigid base with the motor shaft horizontal. Use a suction pipe of at least the pump port size, laid with a constant upward slope and with all joints sealed, because any air leak lengthens priming time or stops it altogether. Fit a foot valve or check valve at the lower end of the suction pipe and a strainer to keep debris out of the ejector. Fill the pump body through the filling plug before the first start. On three-phase versions confirm the rotation direction. When the pump feeds a pressure tank, set the pressure switch and tank pre-charge to suit the duty so the unit does not cycle too often, and drain the pump in cold weather or when it will stand unused.

JCR applications in Oman and the GCC

In Oman and the GCC a stainless steel body is of interest wherever the pump stands in a humid room or near the coast, for example garden irrigation from tanks, small hotel or villa pressure sets and landscaping. Stainless steel resists rust staining, but the pump still needs clean, non-aggressive water.

Many Omani villas and farms use a ground tank with a transfer pump, and a self-priming pump is practical because the suction line can drain and refill with air. The main risks are warm water above the stated limit, sand from wells, and suction leaks. Shade the pump, fit a strainer, and check the foot valve for scale every year.

Information to send with your JCR RFQ

• Flow and delivery pressure required at the point of use
• Water source (well, tank, cistern), suction lift and suction pipe length and diameter
• Liquid temperature and quality, including any sand in the source
• Supply: single-phase or three-phase, voltage, frequency
• Pressure tank, switch or control accessories needed, and the quantity required

Documents and quotation

The manufacturer datasheet for the JCR is attached on this page, and the performance tables in it should be checked against your duty point. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer.

Send the model code, quantity, voltage and frequency and the duty point, and we will confirm availability and prepare a quotation for Oman and the GCC.